pgw: Introduce test TC_s2b_createSession_v4_no_apco
This test allows initial testing of a session creation through the S2b
interface (emulating an ePDG).
A follow-up test will be added to test the APCO IE (feature which
open5gs-smfd still doesn't support).
Change-Id: I38e469edf0e00feca5a648035b64645e2c905937
diff --git a/library/DIAMETER_Emulation.ttcn b/library/DIAMETER_Emulation.ttcn
index e7481ca..69107d4 100644
--- a/library/DIAMETER_Emulation.ttcn
+++ b/library/DIAMETER_Emulation.ttcn
@@ -37,6 +37,7 @@
import from DIAMETER_Templates all;
import from Osmocom_Types all;
import from IPL4asp_Types all;
+import from TCCConversion_Functions all;
import from Native_Functions all;
type hexstring IMSI;
@@ -297,7 +298,13 @@
return str2hex(oct2char(grp[1].avp.avp_data.avp_DCC_NONE_Subscription_Id_Data));
} else {
var octetstring imsi_oct := valueof(imsi_avp.avp_data.avp_BASE_NONE_User_Name);
- return str2hex(oct2char(imsi_oct));
+ var charstring imsi_str := oct2char(imsi_oct);
+ /* Username may be a NAI instead of IMSI: "<IMSI>@nai.epc.mnc<MNC>.mcc<MCC>.3gppnetwork.org" */
+ var integer pos := f_strstr(imsi_str, "@");
+ if (pos != -1) {
+ imsi_str := substr(imsi_str, 0, pos);
+ }
+ return str2hex(imsi_str);
}
}
diff --git a/library/DIAMETER_ts29_273_Templates.ttcn b/library/DIAMETER_ts29_273_Templates.ttcn
index e3a6c2f..87d1601 100644
--- a/library/DIAMETER_ts29_273_Templates.ttcn
+++ b/library/DIAMETER_ts29_273_Templates.ttcn
@@ -204,6 +204,35 @@
*******************************/
/* TS 29.273 9.2.2.5.1 AA-Request (AAR) */
+template (present) PDU_DIAMETER
+tr_DIA_S6b_AAR(template (present) charstring username_nai := ?,
+ template (present) MIPv6_NONE_MIP6_Feature_Vector mip6_feat_vec := ?,
+ template (present) charstring apn := ?,
+ template (present) octetstring sess_id := ?,
+ template (present) charstring orig_host := ?,
+ template (present) charstring orig_realm := ?,
+ template (present) charstring dest_realm := ?,
+ template (present) UINT32 hbh_id := ?,
+ template (present) UINT32 ete_id := ?) :=
+ tr_DIAMETER(flags := '1???????'B,
+ cmd_code := Authorize_Authenticate,
+ app_id := int2oct(c_DIAMETER_3GPP_S6b_AID, 4),
+ hbh_id := hbh_id,
+ ete_id := ete_id,
+ avps := superset(
+ tr_AVP_SessionId(sess_id),
+ /* Optional: DRMP, */
+ tr_AVP_AuthAppId(int2oct(c_DIAMETER_3GPP_S6b_AID, 4)),
+ tr_AVP_OriginHost(orig_host),
+ tr_AVP_OriginRealm(orig_realm),
+ tr_AVP_DestinationRealm(dest_realm),
+ tr_AVP_AuthRequestType(AUTHORIZE_ONLY),
+ tr_AVP_UserName(char2oct_tmpl_present(username_nai)),
+ tr_AVP_MIP6FeatureVector(mip6_feat_vec),
+ tr_AVP_ServiceSelection(apn)
+ /* TODO: Lots other optional */
+ ));
+
template (value) PDU_DIAMETER
ts_DIA_S6b_AAR(template (value) charstring username_nai,
template (value) MIPv6_NONE_MIP6_Feature_Vector mip6_feat_vec,
@@ -257,6 +286,27 @@
tr_AVP_OriginRealm(orig_realm)
));
+template (value) PDU_DIAMETER
+ts_DIA_S6b_AAA(template (value) octetstring sess_id := c_def_sess_id,
+ template (value) charstring orig_host := "aaa.localdomain",
+ template (value) charstring orig_realm := "localdomain",
+ template (value) charstring dest_realm := "localdomain",
+ template (value) UINT32 hbh_id := '00000000'O,
+ template (value) UINT32 ete_id := '00000000'O) :=
+ ts_DIAMETER(flags := '01000000'B,
+ cmd_code := Authorize_Authenticate,
+ app_id := int2oct(c_DIAMETER_3GPP_S6b_AID, 4),
+ hbh_id := hbh_id, ete_id := ete_id,
+ avps := {
+ ts_AVP_SessionId(sess_id),
+ /* Optional: DRMP, */
+ ts_AVP_AuthAppId(int2oct(c_DIAMETER_3GPP_S6b_AID, 4)),
+ ts_AVP_AuthRequestType(AUTHORIZE_ONLY),
+ ts_AVP_ResultCode(DIAMETER_SUCCESS),
+ ts_AVP_OriginHost(orig_host),
+ ts_AVP_OriginRealm(orig_realm)
+ });
+
/* TS 29.273 9.2.2.3.1 Session-Termination-Request (STR) Command,
* Table 9.1.2.3.1/1: S6b Session Termination Request (STR), based on RFC 6733 8.4.1 */
template (value) PDU_DIAMETER
diff --git a/library/GTPv2_Templates.ttcn b/library/GTPv2_Templates.ttcn
index 431415a..c842230 100644
--- a/library/GTPv2_Templates.ttcn
+++ b/library/GTPv2_Templates.ttcn
@@ -407,6 +407,20 @@
}
/* 8.17 */
+type enumerated GTP2C_RAT_Type {
+ GTP2C_RAT_reserved ('00'O),
+ GTP2C_RAT_UTRAN ('01'O),
+ GTP2C_RAT_GERAN ('02'O),
+ GTP2C_RAT_WLAN ('03'O),
+ GTP2C_RAT_GAN ('04'O),
+ GTP2C_RAT_HSPA_EVOLUTION ('05'O),
+ GTP2C_RAT_EUTRAN ('06'O),
+ GTP2C_RAT_Virtual ('07'O),
+ GTP2C_RAT_EUTRAN_NB_IoT ('08'O),
+ GTP2C_RAT_LTE_M ('09'O),
+ GTP2C_RAT_NR ('0A'O)
+} with { variant "FIELDLENGTH(8)" encode "RAW" };
+
template (value) RAT_Type ts_GTP2C_RatType(template (value) integer rat) := {
elementIdentifier := '52'O,
lengthIndicator := 0, /* overwritten */
@@ -1046,6 +1060,7 @@
template (present) GTP2C_Cause cause := ?,
template FullyQualifiedTEID_List fteids := *,
template PDN_AddressAllocation addr := *,
+ template APN_Restriction apn_restriction := *,
template BearerContextGrouped_List bctxg := *) :=
tr_PDU_GTP2C(d_teid, seq, {
createSessionResponse := {
@@ -1055,7 +1070,7 @@
heNBInformationReporting := *,
fullyQualifiedTEID := fteids,
pDN_AddressAllocation := addr,
- aPN_Restriction := ?,
+ aPN_Restriction := apn_restriction,
ambr := *,
linkedEPS_Bearer_ID := *,
protocolConfigOptions := *,
diff --git a/library/Osmocom_Types.ttcn b/library/Osmocom_Types.ttcn
index d034a74..6653408 100644
--- a/library/Osmocom_Types.ttcn
+++ b/library/Osmocom_Types.ttcn
@@ -179,6 +179,15 @@
}
}
+function char2oct_tmpl_present(template (present) charstring inp) return template (present) octetstring
+{
+ if (istemplatekind(inp, "?")) {
+ return ?;
+ } else {
+ return char2oct(valueof(inp));
+ }
+}
+
function hex2str_tmpl(template hexstring inp) return template charstring
{
if (istemplatekind(inp, "omit")) {
diff --git a/pgw/PGW_Tests.ttcn b/pgw/PGW_Tests.ttcn
index bd32760..e39bd62 100644
--- a/pgw/PGW_Tests.ttcn
+++ b/pgw/PGW_Tests.ttcn
@@ -20,6 +20,7 @@
import from DIAMETER_Templates all;
import from DIAMETER_ts29_212_Templates all;
import from DIAMETER_ts29_272_Templates all;
+import from DIAMETER_ts29_273_Templates all;
import from DIAMETER_ts32_299_Templates all;
import from DIAMETER_Emulation all;
@@ -39,6 +40,9 @@
charstring mp_ocs_local_ip := "127.0.0.9";
integer mp_ocs_local_port := 3869;
+ charstring mp_aaa_local_ip := "127.0.0.9";
+ integer mp_aaa_local_port := 3870;
+
charstring mp_diam_realm := "localdomain";
}
@@ -55,6 +59,10 @@
var DIAMETER_Emulation_CT vc_Gy;
port DIAMETER_PT Gy_UNIT;
port DIAMETEREM_PROC_PT Gy_PROC;
+ /* emulated AAA-Server */
+ var DIAMETER_Emulation_CT vc_S6b;
+ port DIAMETER_PT S6b_UNIT;
+ port DIAMETEREM_PROC_PT S6b_PROC;
/* global test case guard timer (actual timeout value is set in f_init()) */
timer T_guard;
}
@@ -97,6 +105,7 @@
port DIAMETER_Conn_PT Gx;
port DIAMETER_Conn_PT Gy;
+ port DIAMETER_Conn_PT S6b;
/* GTP-U IPv4 address remote sie */
var OCT4 g_gtpu4_remote;
@@ -128,7 +137,7 @@
hexstring imsi,
hexstring msisdn optional,
// serving network
- integer rat_type,
+ GTP2C_RAT_Type rat_type,
// flags?
charstring apn,
/* Apn subscribed or non-subscribed */
@@ -155,8 +164,13 @@
}
template (value) SessionPars
-t_SessionPars(hexstring imsi, charstring tundev, template (omit) hexstring msisdn := '1234'H, integer rat_type := 6, charstring apn := "internet",
- boolean selection_mode := false, BIT3 pdn_type := '001'B) := {
+t_SessionPars(hexstring imsi,
+ charstring tundev,
+ template (omit) hexstring msisdn := '1234'H,
+ GTP2C_RAT_Type rat_type := GTP2C_RAT_EUTRAN,
+ charstring apn := "internet",
+ boolean selection_mode := false,
+ BIT3 pdn_type := '001'B) := {
imsi := imsi,
msisdn := msisdn,
rat_type := rat_type,
@@ -228,8 +242,26 @@
connect(vc_Gy:DIAMETER_PROC, self:Gy_PROC);
vc_Gy.start(DIAMETER_Emulation.main(ops, pars, id));
+ /* S6b setup: */
+ pars := {
+ remote_ip := mp_pgw_hostname,
+ remote_sctp_port := -1,
+ local_ip := mp_aaa_local_ip,
+ local_sctp_port := mp_aaa_local_port,
+ origin_host := "aaa." & mp_diam_realm,
+ origin_realm := mp_diam_realm,
+ auth_app_id := c_DIAMETER_3GPP_S6b_AID,
+ vendor_app_id := c_DIAMETER_3GPP_S6b_AID
+ };
+ vc_S6b := DIAMETER_Emulation_CT.create(id);
+ map(vc_S6b:DIAMETER, system:DIAMETER_CODEC_PT);
+ connect(vc_S6b:DIAMETER_UNIT, self:S6b_UNIT);
+ connect(vc_S6b:DIAMETER_PROC, self:S6b_PROC);
+ vc_S6b.start(DIAMETER_Emulation.main(ops, pars, id));
+
f_diameter_wait_capability(Gx_UNIT);
f_diameter_wait_capability(Gy_UNIT);
+ f_diameter_wait_capability(S6b_UNIT);
/* Give some time for our emulation to get out of SUSPECT list of SUT (3 watchdong ping-pongs):
* RFC6733 sec 5.1
* RFC3539 sec 3.4.1 [5]
@@ -266,7 +298,7 @@
function f_start_handler(void_fn fn, template (omit) SessionPars pars_tmpl := omit)
runs on PGW_Test_CT return PGW_Session_CT {
var charstring id := testcasename();
- var DIAMETER_ConnHdlr_CT vc_conn_gx, vc_conn_gy;
+ var DIAMETER_ConnHdlr_CT vc_conn_gx, vc_conn_gy, vc_conn_s6b;
var PGW_Session_CT vc_conn;
var SessionPars pars;
@@ -296,6 +328,14 @@
vc_conn_gy.start(f_diam_connhldr_ct_main(pars.imsi));
}
+ if (isbound(vc_S6b)) {
+ vc_conn_s6b := DIAMETER_ConnHdlr_CT.create(id);
+ connect(vc_conn_s6b:DIAMETER, vc_S6b:DIAMETER_CLIENT);
+ connect(vc_conn_s6b:DIAMETER_PROC, vc_S6b:DIAMETER_PROC);
+ connect(vc_conn:S6b, vc_conn_s6b:DIAMETER_CLIENT);
+ vc_conn_s6b.start(f_diam_connhldr_ct_main(pars.imsi));
+ }
+
vc_conn.start(f_handler_init(fn, pars));
return vc_conn;
}
@@ -325,6 +365,28 @@
return f_concat_pad(15, '26242'H, suffix);
}
+/* S6b emulation (AAA-Server) */
+private altstep as_DIA_S6b_AAR() runs on PGW_Session_CT {
+ var PDU_DIAMETER rx_dia;
+ [] S6b.receive(tr_DIA_S6b_AAR()) -> value rx_dia {
+ var template (omit) AVP avp;
+ var octetstring sess_id;
+
+ avp := f_DIAMETER_get_avp(rx_dia, c_AVP_Code_BASE_NONE_Session_Id);
+ sess_id := valueof(avp.avp_data.avp_BASE_NONE_Session_Id);
+
+ S6b.send(ts_DIA_S6b_AAA(sess_id, "aaa." & mp_diam_realm,
+ mp_diam_realm, mp_diam_realm,
+ rx_dia.hop_by_hop_id, rx_dia.end_to_end_id));
+ setverdict(pass);
+ }
+ [] S6b.receive(PDU_DIAMETER:?) -> value rx_dia {
+ Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail,
+ log2str("Received unexpected DIAMETER ", rx_dia));
+ }
+}
+
+/* Gx emulation (PCRF)*/
private altstep as_DIA_Gx_CCR(DCC_NONE_CC_Request_Type req_type) runs on PGW_Session_CT {
var PDU_DIAMETER rx_dia;
[] Gx.receive(tr_DIA_Gx_CCR(req_type := req_type)) -> value rx_dia {
@@ -347,6 +409,7 @@
}
}
+/* Gy emulation (OCS) */
function f_tr_DIA_Gy_CCR(DCC_NONE_CC_Request_Type req_type)
runs on PGW_Session_CT return template (present) PDU_DIAMETER
{
@@ -359,7 +422,7 @@
var template (present) OCT1 nsapi := ?;
imsi := char2oct(f_dec_TBCD(imsi_hex2oct(g_pars.imsi)));
//msisdn := char2oct(f_dec_TBCD(substr(ctx_val.msisdn, 1, lengthof(ctx_val.msisdn) -1)));
- rat_type := int2oct(g_pars.rat_type, 1);
+ rat_type := int2oct(enum2int(g_pars.rat_type), 1);
charging_char := char2oct(oct2str('0000'O)); // f_s5s8_create_session() uses hardcoded chg_car := '0000'O
nsapi := int2oct(g_pars.bearer.ebi, 1);
select (req_type) {
@@ -538,6 +601,10 @@
}
}
+/* GTPv2C */
+private function is_s2b_iface() runs on PGW_Session_CT return boolean {
+ return (g_pars.rat_type == GTP2C_RAT_WLAN or g_pars.rat_type == GTP2C_RAT_Virtual);
+}
/* find TEID of given interface type (and optionally instance) */
private function f_find_teid(FullyQualifiedTEID_List list,
@@ -558,12 +625,23 @@
/* process one to-be-created bearer context */
private function process_bctx_create(BearerContextGrouped bctx) runs on PGW_Session_CT
{
- /* FIXME: EPS Bearer ID */
+ g_pars.bearer.ebi := bctx.bearerContextIEs.ePS_Bearer_ID.ePS_Bearer_ID_Value;
/* FIXME: Cause */
+ var integer exp_fteid_if_type;
+ var BIT4 exp_fteid_instance;
+ if (is_s2b_iface()) {
+ exp_fteid_if_type := 33;
+ exp_fteid_instance := '0100'B;
+ } else {
+ exp_fteid_if_type := 5;
+ exp_fteid_instance := '0010'B;
+ }
+
/* find F-TEID of the P-GW U side */
var FullyQualifiedTEID rx_fteid;
- rx_fteid := valueof(f_find_teid(bctx.bearerContextIEs.fullyQualifiedTEID, 5, '0010'B));
+ rx_fteid := valueof(f_find_teid(bctx.bearerContextIEs.fullyQualifiedTEID,
+ exp_fteid_if_type, exp_fteid_instance));
g_pars.bearer.teid_remote := rx_fteid.tEID_GRE_Key;
if (rx_fteid.v4_Flag == '1'B) {
g_gtpu4_remote := rx_fteid.iPv4_Address;
@@ -601,10 +679,19 @@
template (omit) UserLocationInfo uli_ie := omit) runs on PGW_Session_CT {
var PDU_GTPCv2 rx;
+ /* Defaults used for s5/s8: */
+ var boolean do_s6b := false;
+ var template APN_Restriction apn_restriction := ?;
+ /* Change behavior when on S2b: */
+ if (is_s2b_iface()) {
+ do_s6b := true;
+ apn_restriction := omit;
+ }
+
var template (value) PDU_GTPCv2 g2c :=
ts_GTP2C_CreateSessionReq(imsi := g_pars.imsi,
msisdn := g_pars.msisdn,
- rat_type := g_pars.rat_type,
+ rat_type := enum2int(g_pars.rat_type),
sender_fteid := fteid_c_ie,
apn := f_enc_dns_hostname(g_pars.apn),
pdn_type := g_pars.pdn_type,
@@ -615,14 +702,20 @@
g2c.gtpcv2_pdu.createSessionRequest.servingNetwork := ts_GTP2C_ServingNetwork('001'H, '01F'H);
GTP2.send(g2c);
+ if (do_s6b and S6b.checkstate("Connected")) {
+ as_DIA_S6b_AAR();
+ }
if (Gx.checkstate("Connected")) {
as_DIA_Gx_CCR(INITIAL_REQUEST);
}
+ /* FIXME: When on S2b interface, SMF is not using the Gy interface, unknown reason. */
if (Gy.checkstate("Connected")) {
as_DIA_Gy_CCR(INITIAL_REQUEST);
}
alt {
- [] GTP2.receive(tr_GTP2C_CreateSessionResp(d_teid:=g_pars.teic_local, cause:=Request_accepted)) -> value rx {
+ [] GTP2.receive(tr_GTP2C_CreateSessionResp(d_teid := g_pars.teic_local,
+ cause := Request_accepted,
+ apn_restriction := apn_restriction)) -> value rx {
/* extract TEIDs */
var CreateSessionResponse resp := rx.gtpcv2_pdu.createSessionResponse;
g_pars.teic_remote := resp.fullyQualifiedTEID[0].tEID_GRE_Key;
@@ -686,6 +779,25 @@
}
+/* create a session on the PGW on a S2b interface (from ePDG)*/
+private function f_s2b_create_session() runs on PGW_Session_CT {
+ var template (value) FullyQualifiedTEID fteid_c_ie, fteid_u_ie;
+ var template (value) UserLocationInfo uli_ie;
+
+ fteid_c_ie := ts_GTP2C_FTEID(FTEID_IF_S2b_ePDG_GTPC, g_pars.teic_local, 0,
+ f_inet_addr(mp_local_hostname_c), omit);
+ fteid_u_ie := ts_GTP2C_FTEID(FTEID_IF_S2bU_ePDG_GTPU, g_pars.bearer.teid_local, 5,
+ f_inet_addr(mp_local_hostname_u), omit);
+ f_create_session(fteid_c_ie, fteid_u_ie);
+ /* open5gs up to 1.2.3 won't accept it without ULI, despite not mandatory */
+ var template (value) TAI tai := { '0'H, '0'H, '1'H, 'F'H, '0'H, '1'H, '0001'O };
+ var template (value) ECGI ecgi := { '0'H, '0'H, '1'H, 'F'H, '0'H, '1'H, '0'H, 23 };
+ uli_ie := ts_GTP2C_UserLocInfo(tai := tai, ecgi := ecgi);
+
+ f_create_session(fteid_c_ie, fteid_u_ie, uli_ie);
+
+}
+
/* delete the session from the PGW */
private function f_delete_session(template (omit) GTP2C_Cause tx_cause := omit,
template (present) OCT4 exp_teid,
@@ -934,6 +1046,21 @@
vc_conn.done;
}
+/* create a session, expect it to succeed */
+private function f_TC_s2b_createSession_v4_noapco() runs on PGW_Session_CT {
+ f_s2b_create_session();
+ setverdict(pass);
+}
+testcase TC_s2b_createSession_v4_noapco() runs on PGW_Test_CT {
+ var PGW_Session_CT vc_conn;
+ var SessionPars pars := valueof(t_SessionPars('001010123456789'H,
+ "tun22",
+ rat_type := GTP2C_RAT_WLAN));
+ f_init();
+ vc_conn := f_start_handler(refers(f_TC_s2b_createSession_v4_noapco), pars);
+ vc_conn.done;
+}
+
control {
execute( TC_tx_echo() );
execute( TC_createSession() );
@@ -942,6 +1069,7 @@
execute( TC_createSession_deleteSession() );
execute( TC_deleteSession_unknown() );
execute( TC_gy_charging_cc_time() );
+ execute( TC_s2b_createSession_v4_noapco() );
}
diff --git a/pgw/expected-results.xml b/pgw/expected-results.xml
index 0643289..0e252af 100644
--- a/pgw/expected-results.xml
+++ b/pgw/expected-results.xml
@@ -7,4 +7,5 @@
<testcase classname='PGW_Tests' name='TC_createSession_deleteSession' time='MASKED'/>
<testcase classname='PGW_Tests' name='TC_deleteSession_unknown' time='MASKED'/>
<testcase classname='PGW_Tests' name='TC_gy_charging_cc_time' time='MASKED'/>
+ <testcase classname='PGW_Tests' name='TC_s2b_createSession_v4_noapco' time='MASKED'/>
</testsuite>
diff --git a/pgw/gen_links.sh b/pgw/gen_links.sh
index 9aebfc2..40671f9 100755
--- a/pgw/gen_links.sh
+++ b/pgw/gen_links.sh
@@ -64,7 +64,7 @@
FILES+="GTPv2_CodecPort.ttcn GTPv2_CodecPort_CtrlFunctDef.cc GTPv2_CodecPort_CtrlFunct.ttcn GTPv2_Emulation.ttcn "
FILES+="DNS_Helpers.ttcn "
FILES+="DIAMETER_Types.ttcn DIAMETER_CodecPort.ttcn DIAMETER_CodecPort_CtrlFunct.ttcn DIAMETER_CodecPort_CtrlFunctDef.cc DIAMETER_Emulation.ttcn "
-FILES+="DIAMETER_Templates.ttcn DIAMETER_ts29_212_Templates.ttcn DIAMETER_ts29_272_Templates.ttcn DIAMETER_ts32_299_Templates.ttcn "
+FILES+="DIAMETER_Templates.ttcn DIAMETER_ts29_212_Templates.ttcn DIAMETER_ts29_272_Templates.ttcn DIAMETER_rfc5447_Templates.ttcn DIAMETER_ts29_273_Templates.ttcn DIAMETER_ts32_299_Templates.ttcn "
gen_links $DIR $FILES
ignore_pp_results